Take into account that you don't need to connect this power connector if you closes the JP1 jumper. ![]() GSMPWR2: GSM modules power: connect, from left to right: Any alternative 5V poser supply (can be ATX Yellow (12V) through a 5V DC-DC step down, ATX Black (GND).GSMPWR: GSM modules power: connect, from left to right: ATX Red (5V), ATX Black (GND).LPWR: Logic power: connect, from left to right: ATX Purple (5V SB), ATX Black (GND).ATXE: ATX enable signal, connect, from left to right: ATX Black (GND), ATX Green (Enable).RSW: reset switch, connect the ATX reset switch.PSW: power switch, connect the ATX power switch.Board designed using Eagle Cad, sources under hardware folder. ![]() The device is based on an Arduino PRO mini, running at 16 MHz and 5V. This repo contains source code and hardware specifications for building a 8 SIMs communications device to monitor SMS reception on up to 8 mobile lines.
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